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3. know of

know of

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know of someone or something

to be aware of the existence of someone or something. I think I know of someone who can help you. I didn't know of Wally's arrival.

See also: know, of

know of somebody/something

to have information about someone or something Do you know of a way to remove this stain? We've never met, but I certainly know of him.

Usage notes: also used in the spoken phrase not that I know of (I do not know): a€?Is he home yet?a€? a€?Not that I know of.a€?

See also: know, of